Clamp.



` Im-727.986. PATBNTED MAYIL'Z,v 1903.-

R. H. MAKOWSKY. CLAMP.

APPLICATION FILED NOV. 3, 1902.

No MODEL.

' I' I BY A TTURNE YS.

The NoRmsvvs-rsas cn. PHoYuumom/nmmou. u. fr.,

UNrrn STATESA atented May 12, 1903.

.,.ATENT OFFICE.

ROBERT HERMAN MAKOWSKY, OF NEW HAVEN, CONNECTICUT, ASSIGNOR VTO HIMSELF, AND .IULIUS G. MAKOWSKY, OF BROOKLYN, NEW YORK.

CLAIVI-P.

SPECIFICATION forming part of Letters Patent No. 727,986,`dated May 12, 1903.

Application led November 3, 1902. Serial No. 129,899. A(No model.)

To @ZZ whom it may concern.:

Be it known that I, ROBERT HERMAN MA- KOWSKY, a citizen of the United States, and a resident of New Haven, in the county of New Haven and State of Connecticut, have invented new and useful Improvements in Clamps, of which the following is a full, clear, and exact description.

This invention relates to improvements in clamps for the use of cabinet-makers and o/ther woodworkers, the object being to pro- ,.-vide a clamp of simple construction that may be used as an ordinary clamping device and also may be used as a vise adjustably connected to a bench.

I will describe a clamp embodying my invention and then point out the novel features in the appended claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts'in all the figures.

Figure 1 is a perspective View of a clamp embodying my invention. Fig. 2lis a plan view thereof, and Fig. 3 is a sectional view thereof.

The clamp comprises a bar 1, having channels 2 3 in its opposite sides and also having on its upper face transverse channels 4. Mounted to slide on the bar are the clamp-jaws 5 6. These jaws may be formed of wood faced with metal, as clearlyindicated in the drawings.A The jaw 5 is provided with a chamber 7, in which is arranged a lever '8, a portion of said lever being extended outward, so that it may be manipulated. Attached to the inner end of the lever is a locking-plate?, movable! in an outward opening 10 and designed to engage in any one of the channels 4. The lever 8 is held yieldingly in its locking position by means of a spring 11. The other jaw' isY moved toward and from the jaw 5 by means of a screw 12. This screw 12 engages in a tapped opening in a blockl, secured to the bar l, and connectedto the end of the screw is a metal sleeve 14., which is arranged to turn within the jaw 6, and the end of this sleeve is provided with a head 15 for engaging against a shoulder formed in the jaw, so as to prevent the sleeve from being drawn out of the jaw. The sleeve is connected to the screw by means of a pin 16, which may be inserted through an opening 17, formed in the 'Patentjaw. At the opposite sides Y eachjaw is provided vwith ngers 18,whichengage inV the channels 2 3. .When the clamp is to be used as a benchvise, lmetal slidewayslS?L are secured to the bench and receive angular heads 19 of clamping-bolts 20,`which pass through the bar 1 near the ends, and on these blts are thumbnuts 21. Y

By providing the means above described for securing the device to a bench it is obvious that it may be raised or lowered, as the work in hand may require, and it may also be lowered to bring the upper surfaces of the jaws below the plane ofthe bench, as

desired.

Having thus described my invention, I claim as new and desire to secure by Letters 1. The combination with a bench,'of Va clamp comprising a bar, having channels in its upper face, a jaw movable on the bar, a spring-pressed locking-plate carriedby said jaw for engaging in a channel, another jaw movable on the bar, a screw for moving the last-named jaw and a vertical sliding connection between the clamp and bench.

2. A clamp comprising a bar, jaws mounted to slide thereon,slideways adapted to be secured to a bench or the like 'near each end of the bar, bolts arrangedin thebar and having angular heads for engaging in the slide- Ways, and clamping-nuts on the bolts.

3. The combination with a bench, of a clamp comprising a bar having channels in Vits-opposite sides and transverse channels in its upper face, clamping-jaws, Iinger/portions on the jaws engagingjwith'the opposite channels,-a lever extended into one of said jaws,

-a plate carried by said lever for engaging in ROBERT HERMAN MAKOWSKY.

Witnesses GUsTAvE HAAsE, ROBERT RIEGER.

IOO 

